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<DIV dir=ltr align=left><SPAN class=715274623-24092022>I use silvered mica for
VCOs and VCFs, typically 390pF or 500pF. They work very well. They
are typically big brown things that are kinda lumpy.</SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=715274623-24092022></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=715274623-24092022>You have to be careful
with some types of caps, such as polystyrene, because they are easily damaged or
destroyed when soldering. Not sure about polypropylene. Silvered
mica and metallized polyester are pretty forgiving.</SPAN></DIV><BR>
<DIV dir=ltr lang=en-us class=OutlookMessageHeader align=left>
<HR tabIndex=-1>
<FONT size=2 face=Tahoma><B>From:</B> Synth-diy
[mailto:synth-diy-bounces@synth-diy.org] <B>On Behalf Of </B>Mike
Bryant<BR><B>Sent:</B> Saturday, September 24, 2022 3:37 PM<BR><B>To:</B>
prowlerraven32@hotmail.com<BR><B>Cc:</B>
synth-diy@synth-diy.org<BR><B>Subject:</B> Re: [sdiy] The best types of
capacitors to use when designing a VCF<BR></FONT><BR></DIV>
<DIV></DIV>
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Non-UBC Email]</FONT></TD></TR></TBODY></TABLE>
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<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">If
you can afford them then polypropylene are the very best you can get for
pro-audio. But a good metallised polyester isn’t far
behind.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">That
said, for many products automotive quality SMD ceramics (the ones with the
anti-vibration mountings that kill microphony) are more than good
enough.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">There’s
a whole chapter on choosing components like this in Douglas Self’s book which it
is well worth buying a copy of.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><o:p> </o:p></SPAN></P>
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<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt"
lang=EN-US>From:</SPAN></B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt" lang=EN-US>
Synth-diy [mailto:synth-diy-bounces@synth-diy.org] <B>On Behalf Of </B>Logan
Mitchell Sr via Synth-diy<BR><B>Sent:</B> 24 September 2022 23:12<BR><B>To:</B>
Synth-diy@synth-diy.org<BR><B>Subject:</B> [sdiy] The best types of capacitors
to use when designing a VCF<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p> </o:p></P>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">Hello.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">Can anyone tell me
what are the best types of capacitors to use when designing a VCF
?<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black"><o:p> </o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: black">Logan<o:p></o:p></SPAN></P></DIV></DIV></BODY></HTML>